IT'S not quite as FAB for the owners of a futuristic house based on the cult puppet show Thunderbirds after the value of the property fell by more than a quarter.

The property, in Poole, Dorset, won the Best House prize at the 2006 National Home Builder Design Awards and was put up for sale for £4million.

The home - which was built to look like International Rescue's secret base on Tracy Island, command centre for Lady Penelope and her chauffeur Parker - is up for sale with estate agents Hamptons International for £2,595,000.

Everything in the house can be operated with just one click on an electronic keypad.

It has blue glass and a winged roof, as well as a luxury fitted kitchen, living room, family room, dining area, cinema, gymnasium, five double bedrooms, all en-suite, an open gallery staircase, triple heated garage, outdoor swimming pool and changing room.

The inside of the house [WESSEX PIX]

The home, which has 60,000 square feet of living space stands in an acre of grounds at Branksome Park in Poole, where most of the properties cost millions of pounds.

Branksome Park, stretching over 360 acres, has long been a home to the stars - celebs who have lived there include Tony Blackburn, Bob Monkhouse, Tom Jones and Lord of the Rings author J. R. R. Tolkein.

The opulent properties have beachfront walks to Alum and Branksome Chines.

Designer Eddie Mitchell used the model of Tracy Island, from the cult 60s show - created by Gerry and Sylvia Anderson - which he had loved as a child, to create the remarkable one-off residence.

Agents hope would-be buyers will be inspired by news that a re-make, Thunderbirds Are Go!, will be broadcast next year on Children's ITV - some 50 years after the original.